U.S. DIESEL PRICES HIT RECORD $6.05/GALLON The national average for diesel topped $6 for the first time, up more than 60% from $3.71 a year ago, according to AAA. Gasoline also climbed to $4.29/gallon. Diesel prices jumped 24.1% in August and accounted for more than a third of the monthly increase in producer goods prices, with higher transportation costs expected to increasingly flow through to food, autos, construction and other consumer goods if prices stay elevated. The surge is being driven by tighter global oil supply and refining capacity amid the Iran war and reduced Russian refinery output. Source AAA 11-SEP-2026 05:13 AM ET